On the line : the story of the Greenwich Meridian

''Provides clear explanations about latitude and longitude and the world's time zones. Offers a succinct history of the Meridian Line and its importance in defining international time standards. Breaks down complex topics into manageable articles, with fun trivia to aid understanding. This insightful, concise guide reveals why international time standards are based around the Greenwich meridian - Longitude 0 - where east meets west, and the important discoveries made at Greenwich that led to time as we know it.''--Provided by the publisher.